| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [verb] on | 3182 |
|
| 2 | [verb] [been] [v-ing] on | 530 |
|
| 3 | [verb] [been] working [prep] | 484 |
|
| 4 | [verb] [been] work on | 170 |
|
| 5 | [verb] [be] working on | 169 |
|
